#BrainFood brings you the best shows on TV and radio, science apps and books to activate your mind, and fun events to visit. This week – explore the tea factory, discover the science of migraines, and make a noise at Dublin’s Science Gallery.

In the UK, we drink around 165 million cups of tea a day, most of these in the Focus office alone. But where do our teabags come from? Gregg Wallace follows their journey through the factory, from leaf to bag. Meanwhile, Cherry Healey discovers the chemistry of the tea leaf, and gets some scientific tips on making the best possible cup of char.

Migraines blight the lives of millions of people around the world. Writer and academic A. L. Kennedy is one of them, and in this programme she explores the science and history of this debilitating condition. She speaks to neurologists and hears the stories of a handful of sufferers, including some who have made art inspired by their experiences.

The chances are that you’re breathing in some of Caesar’s last breath right now. Sam Kean’s latest book uses this strange-but-true fact as the starting point for an enlightening exploration of the air around us. It’s a journey that takes in radioactive pigs, spontaneous combustion, alien atmospheres, and an unforgettable trip to the Moulin Rouge. Read our interview with Sam here.

Explore the blossoming relationship between technology and music in this new exhibition. In the Noise Studio, visitors can invent their own instruments, bringing them to life using electronics and cardboard. Other highlights include sonic bikes that compose their own tunes as they’re pedalled through the streets of Dublin, and a set of swings that create harmonies as you rock back and forth.

A follow-up to Professor Astro Cat’s Solar System, this latest outing for the cosmic feline is a space-themed puzzle app for ages 6-11. There are six games designed to hone the player’s logic, concentration, memory and speed, with collectable stickers, mind-expanding facts, and 50 difficulty levels offering plenty of replayability.

For more fabulous apps, check out our list of the top 10 science apps for Android and iOS.